EFFECT OF MEAN GAS TEMPERATURE OF A VARIABLE COMPRESSION RATIO DIESEL ENGINE OPERATING WITH PONGAMIA PINNATA OIL BLENDS UNDER DIFFERENT CRANK ANGLES

MECHANICAL ENGINEERING

In this experimental study mean gas temperature of a variable compression ratio (VCR) Diesel engine operating with diesel and Honge oil blends were studied under different crank angle (-360˚ to +359˚), five different percentage loading conditions (0%, 25%, 50%, 75%&100%), two compression ratio (17:01 & 18:01) and three different Honge oil blends (B10, B15 & B20)which are blended with diesel by volumetric basis (100 ml Honge oil: 900 ml pure Diesel, 150 ml Honge oil: 850 ml pure Diesel, 200 ml Honge oil: 800 ml pure Diesel) respectively. For comparative purpose initially the engine was run by pure Diesel. This study shows that the mean gas temperature is maximum when the engine operates with Honge oil (B10 blend) which was blended with pure Diesel on 75%loading conditions at a crank angle of 23˚ and compression ratio 17:01. This study shows that the mean gas temperature is minimum when the engine operates with Honge oil (B10 blend) which was blended with pure Diesel on 0% loading conditions at a crank angle of 26˚ and compression ratio 17:01.

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